package com.whatsmars.base.thread;

import java.util.concurrent.ArrayBlockingQueue;
import java.util.concurrent.BlockingQueue;

public class ArrayBlockingQueueTest {

    public static void main(String[] args) {
        final BlockingQueue<String> queue = new ArrayBlockingQueue<String>(1);
        // final CopyOnWriteArrayList<String> list = new CopyOnWriteArrayList<String>();
        for (int i = 0; i < 4; i++) {
            new Thread(new Runnable() {
                @Override
                public void run() {
                    while (true) {
                        try {
                            //String log = list.remove(0);
                            String log = queue.take();
                            parseLog(log);
                        } catch (InterruptedException e) {
                            e.printStackTrace();
                        }
                    }
                }

            }).start();
        }

        System.out.println("begin:" + (System.currentTimeMillis() / 1000));
        /*
         * 模拟处理16行日志，下面的代码产生了16个日志对象，当前代码需要运行16秒才能打印完这些日志。
         * 修改程序代码，开四个线程让这16个对象在4秒钟打完。
         */
        for (int i = 0; i < 16; i++) { // 这行代码不能改动
            final String log = "" + (i + 1);// 这行代码不能改动
            {
                //list.add(log);
                try {
                    queue.put(log);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
                // ArrayBlockingQueueTest.parseLog(log);
            }
        }
    }

    // parseLog方法内部的代码不能改动
    public static void parseLog(String log) {
        System.out.println(log + ":" + (System.currentTimeMillis() / 1000));

        try {
            Thread.sleep(1000);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
    }

}
